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SAN,-,J OAQ U I N Environmental Health Department <br /> COUNTY <br /> Kasey Foley, REHS, Interim Director <br /> IFO Greatness grows here. PROGRAM COORDINATORS <br /> Robert McClellon,REHS <br /> OPY <br /> Jeff Carruesco, REHS, RDI <br /> C ( Willy Ng,REHS <br /> Muniappa Naidu, REHS <br /> Michael Kith, REHS <br /> Melissa Nissim, REHS <br /> January 24, 2020 <br /> Sandra Richards <br /> 900 N. Workman Ct <br /> San Fernando, CA 95220 <br /> RE: Soil Suitability/Nitrate Loading Study & Addendum <br /> 21300 Mann Rd, Stockton <br /> APN 017-290-09, SR0081403 <br /> The San Joaquin County Environmental Health Department (EHD) has reviewed the Soil Suitability/Nitrate <br /> Loading (SSNL) Study and its Addendum, dated November 12, 2019 and December 24, 2020 for the above <br /> noted location and has the following comments for your consideration. <br /> The SSNL was prepared to determine the suitability of the above noted parcel for onsite wastewater treatment <br /> system (OWTS) usage and the potential impact of nitrate to groundwater for the proposed project <br /> development. The proposed development project includes: <br /> 1. A three-bedroom, two bath, single family home. <br /> 2. The OWTS usage for the future development with potential average daily flow of 420 gallons per day <br /> of wastewater for each site. <br /> Based on the information provided, the EHD can make the following findings: <br /> 1. The SSNL Study supports the suitability for standard OWTS usage for the development project, <br /> pursuant to San Joaquin County Ordinance Code Title 9, Section 9-1105.2(d), provided the existing <br /> OWTS and 100% replacement areas can meet all required minimum setbacks. <br /> 2. The water sample data show the well being utilized for drinking water has an elevated level of 1,2- <br /> Dibromo-3-chloropropane (DBCP) of 0.29 ug/L and may not be a suitable source for the potable water <br /> supply for new development. A potable water supply that can provide a consistent source of safe and <br /> clean water adequate for human consumption, cooking, and sanitary purposes for the proposed <br /> project prior to the issuance of building permits (2016 CA Plumbing Code, Section 601.2). <br /> If you have any questions please contact Naseem Ahmed, Registered Environmental Health Specialist, <br /> REHS, at nahmed@sj org or (209) 468-3436. <br /> Micha1 I Kith, REHS <br /> Program Coordinator <br /> C: Petralogix Engineering, Inc <br /> 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 1 F 209 464-0138 1 www.sjgov.org/ehd <br />